EP 0710522 A1 19960508 - Flux formulation
Title (en)
Flux formulation
Title (de)
Flussmittelzusammensetzung
Title (fr)
Composition de flux
Publication
Application
Priority
US 32794194 A 19941024
Abstract (en)
A novel flux formulation for the assembly of electronic circuit boards having a conformal coating comprises: (1) a solvent, pref. water; (2) a water-soluble weak organic acid, pref. adipic acid; (3) a halide-free non-ionic surfactant, pref. an alcohol ethoxylate; and (4) a biocidal co-solvent, pref. isopropanol. The formulation is compatible with the cpd. coating, allows the elimination of post-soldering cleaning and emits no volatile organic cpds. during fluxing and soldering. Also claimed is a method for soldering which comprises: (i) heating the components to be soldered to a suitable temp.; and (ii) applying to the surface to be soldered, solder and the disclosed flux.
IPC 1-7
IPC 8 full level
B23K 35/36 (2006.01); B23K 35/363 (2006.01)
CPC (source: EP US)
B23K 35/3612 (2013.01 - EP US); B23K 35/3618 (2013.01 - EP US)
Citation (applicant)
- US 5085365 A 19920204 - TURNER RAYMOND L [US]
- US 4360392 A 19821123 - ROBERTS DANIEL F T
- US 2581820 A 19520108 - STRIGHT BENJAMIN M
- US 4994119 A 19910219 - GUTIERREZ BARBARA L [US], et al
- US 3925112 A 19751209 - PETERSEN SR ARTHUR, et al
Citation (search report)
- [X] US 5334260 A 19940802 - STEFANOWSKI KRYSTYNA [US]
- [X] WO 8600844 A1 19860213 - YTKEMISKA INST [SE]
- [X] US 3162547 A 19641222 - KENDALL EARL W
- [A] EP 0538822 A1 19930428 - HUGHES AIRCRAFT CO [US]
- [A] GB 2058144 A 19810408 - STANDARD TELEPHONES CABLES LTD
- [A] FR 2178013 A1 19731109 - LAKE CHEMICAL CO [US]
Designated contracting state (EPC)
DE GB PT
DOCDB simple family (publication)
US 5443660 A 19950822; CA 2161154 A1 19960425; DE 69519148 D1 20001123; DE 69519148 T2 20010510; EP 0710522 A1 19960508; EP 0710522 B1 20001018; PT 710522 E 20010430
DOCDB simple family (application)
US 32794194 A 19941024; CA 2161154 A 19951023; DE 69519148 T 19950915; EP 95306518 A 19950915; PT 95306518 T 19950915